I am gonna catch shit for this but believe me this works! I have been using this for around 8 months now and I have saved a ton of money.

For PH DOwn
Go to an auto parts store and buy sulfuric acid yes Battery acid, You can dilute it to around 1/2 cup acid to One gallon of water.

If you need PH UP go to Lowes and Buy Roebic Drain opener its 100 percent pure Sodium Hydroide. Do NOT use drano or anything else you need 100 percent sodium Hydroxide. mix about 100 grams of the stuff to one gallon of water.

Now you just spent about 15 bucks for all the ph up and down that you will use in 2 years.

If you check with commerical growers they will tell you the same thing, Sulfuric acid for down and sodium hydroxide for up.

Just dont tell any weed growers about this, (Sproutco was banned for it) But believe me it works. However if you wanna keep paying the Hydro stores for water to the tune of about 30 buck a gallon go ahead.

Not to sure about the sodium hydroxid....sodium is salt and can be a problem.

I have read about using potassium hydroxide instead as the plant can utilize the potassium.

As to the concentration and the product to use I do not know.

minds_I

__________________"Fate rarely calls upon oneself at a time of one's own chosing"
"Change is the only one immutable universal truth." "Wisdom is the difference between knowledge and experience."
"And it's agreed that there's a need to play the game and to win again"
"Here's to cigarettes, whisky and wild wild women"
"Sometimes, it is more pleasing to want a thing then to have it."
"Patriotism is more closely linked to dissent than it is to conformity and a blind desire for safety and security.
"Teach the children quietly for someday sons and daughters will rise up and fight where we stood still"
"The natural progress of things is for liberty to yield and government to gain ground. T, Jefferson"
"Science adjusts its views based on what's observed. Faith is the denial of observation so that belief can be preserved."
Tact is the ability to tell someone to go to hell in such a way that they look forward to the trip.

The sodium hydroxide doesnt affect your ppms at all. I know it sound crazy for stoners like us to be messin with this stuff but it really does work. The advantage of the Sodium hydroxide of the Baking sode it that it holds up longer with less. I was skeptical at first too but I did a lot of ponderin on this as my man Carl says (slingblade) and then I tryed it and no bullshit it works. I have had a few beers tonight but I aint that F up yet I aint messin with you it works. (I have been known to be quite the wiseass later in the evenin but I am on the east cost and its still early yet.

Side that these are serious chemicals and shoulh be handled with care. No children should try this its for advanced growers ONLY!!!!!

i had been researching it because i'd seen and people talk about using it, all the time on hydroponic gardening sites.

So i found a recipe at a site.

The guy's recipe was just for one liter.

It was ratio'd at 19-1, distilled water and acid.

A U.S. gallon: is 16 cups.

i figured out if i poured out a cup from a brand new gallon of distilled water so i could get a cup of the acid in, that was 15 to 1, not far from 19 - 1;

Later on after about a month of using it on my plants, i posted it up in Sproutco's thread, because he didn't have a recipe in there, just mentioned it could be done.

============================== ============================== ===============
Sproutco got banned for publishing p.m.s somebody had sent him while they were arguing Fred.
I saw one of the mods tell some guys who were speculating why he got banned.

I found a product at Home Depot that contains both sodium and potassium hydroxide. Here is the link to a picture http://www.scotchcorp.com/ it's the hair and grease drain opener in the black bottle.

Yes but what else is in it???? I was warned not to use anything unless it gives you the Specific concentrations like I said Roebic say ON THE BOTTLE 100% sodium Hydroxide. I would wait til you get a conformation from Someone IN THE KNOW about that product. I dont know so I cant say... Be patient someone very intelligent will enlighten you soon...

I currently use Crystals of 100% Lye (aka sodium hydroxide or caustic salt) but when I saw this stuff at the store I was curious. It's a liquid so there has to be something else in it was wondering if maybe it's just water and therefore safe to use.

guys, in aquaponic system where health is important they use only KOH and CaOH
sodium ho sucks(builds up in ur system), they put it in our tap water to lower the ph(alla softener) bull shit

KOH and CaOH, don't take my words 100% as i haven't tried any of these, but i've read a lot on aquaponic systems and i've been working on one for some time now, KOH and CaOH isn't just a ph adjuster in aq. system, it is also a nutrient supplement(K and Ca) for growing plants with fruits(tomatoe etc.)

the point is to not add shit that plants/animals don't need in such dosages...if added too much it can show as a bad taste or burned plants etc.

ph should be maintained by you, not by ph up or down
using RO water helps you to keep the pH down, adding phosphor or pottasium ions brings the pH up again....then you can compensate with adding tap water that holds more +ions if you ph goes down or RO water if your ph goes up too much

ph up or down is needed when u fuck up the feeding/watering schedule

basicaly, read bio-tokes water chemistry or and kind off chemistry book involving ion balance in water suspensions.